This project does not yet have a composer.json file.
Context:
I don't exactly know how the internals of packages.drupal.org work, but it seems that the package dependencies are automatically derived from the module's info.yml. In any caase, this module's package (composer show drupal/purge_purger_http --all) declares a dependency on the "drupal/purge_tokens" package, which is strange because this package does not exist (purge_tokens is a submodule in the "drupal/purge" package). This declared dependency on a non-existent package causes unexpected failures when running composer update drupal/purge. I expect this to be solved once a composer.json is added, declaring a dependency on only "drupal/purge".
Closed: cannot reproduce
1.0
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I just checked the automatically generated composer.json file and I don't see a dependency on drupal/purge_tokens, only drupal/core and drupal/purge. Might have been a temporary issue, let me know if you're still encountering this today.